Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended												12 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014	Apr. 10, 2007
Current Income Tax Expense
Federal													$ 34,932	$ 80,124	$ 41,497
State and Local													1,887	572	4,246
Total Current Income Tax Expense													36,819	80,696	45,743
Deferred Income Tax Expense (Benefit)
Federal													(17,529)	(5,245)	(11,613)
State and Local													(1,968)	1,979	(1,273)
Total Deferred Income Tax (Benefit)													(19,497)	(3,266)	(12,886)
Total Income Tax Expense	$ (2,948)	$ (2,743)	$ 5,958	$ 17,055	$ 17,222	$ 17,973	$ 22,435	$ 19,800	$ 14,019	$ 13,280	$ 9,800	$ (4,242)	$ 17,322	$ 77,430	$ 32,857
Reconciliation of the company's federal statutory tax rate to its effective rate
Federal income tax at statutory rate (as a percent)													35.00%	35.00%	35.00%
State and local income tax, net (as a percent)													(0.10%)	0.10%	2.20%
Nondeductible expenses (as a percent)													0.80%		0.40%
Foreign rate differential (as a percent)													0.50%	0.10%	0.20%
Income tax credits (as a percent)													(3.00%)	(0.40%)	(0.40%)
Domestic production activity deduction (as a percent)													(5.20%)	(1.30%)	(0.50%)
Change in tax laws (as a percent)														0.60%
Other (as a percent)													(0.10%)	(0.10%)	(0.40%)
Effective income tax rate (as a percent)													27.90%	34.00%	36.50%
Deferred tax assets:
Accrued expenses	1,636				98								$ 1,636	$ 98
Share-based compensation expense	5,074				2,688								5,074	2,688
Reserve for returns	14,583				6,520								14,583	6,520
Reserves for rebates	19,235				6,648								19,235	6,648
Reserves for accounts receivable and inventory	6,305				3,790								6,305	3,790
Intangible impairment	3,312				4,342								3,312	4,342
Federal net operating loss	736				801								736	801
State net operating loss	1,469												1,469
Impairment on Cody note receivable	1,941				1,905								1,941	1,905
Accumulated amortization on intangible assets	5,301				8,526								5,301	8,526
Settlement Liability	7,014												7,014
Foreign net operating loss	579				421								579	421
Other	901				185								901	185
Total deferred tax asset	68,086				35,924								68,086	35,924
Valuation allowance	(3,927)				(2,326)								(3,927)	(2,326)
Total deferred tax asset less valuation allowance	64,159				33,598								64,159	33,598
Deferred tax liabilities:
Prepaid expenses	263				115								263	115
Property, plant and equipment	11,381				4,687								11,381	4,687
Other	67				31								67	31
Total deferred tax liability	11,711				4,833								11,711	4,833
Net deferred tax asset	$ 52,448				$ 28,765								$ 52,448	$ 28,765
Cody Laboratories, Inc.
Deferred tax assets:
Total deferred tax asset																$ 3,800
Net operating loss (NOL) carry forwards with the IRS at the date of acquisition, expiring in 2026 | Cody Laboratories, Inc.
Deferred tax assets:
Total deferred tax asset																1,900
Net operating loss (NOL) carry forwards with the IRS at the date of acquisition, expiring in 2027 | Cody Laboratories, Inc.
Deferred tax assets:
Total deferred tax asset																$ 1,900